NYC-WTC_000210714

NYC 9/11 Public Portal Document

o Enviroscience TEM AIR SAMPLE RESULTS CURf^r: T«^h Clean a’ SAMPIJE DATE: September 24. 2001 Consultants, Inc. fS <x» 2150 SMiTwrowN Avenue PROJECT NAME; AMEX 22Tlid!nf S RECEIVED DATE: September 25,2001 Ronkonkoma, New YryrrK I 1779 Ambient IS PrtOtc;: (631) 5003191 AREA: 41h Floor SAMPLER; B,Gallagber Facsimile (631) 580 3195 WWW ErrviROtiLAr.tH.OKG CLIKNl # no 10235 ClISTOnV #; B-05-04 r:i Ai^# 111581 cn w F-* NVLAP #200531-0 ai 00 o w San^te Ijocatinn, , Start FjmI Run Tune Flow RBle Vohnne Rlter Cooc. Sensitiyity Air Cone. F-* to minutes Avg. fJters S/mml S/«x S/oc O1

TEM A12 Room 401 1554 21:10 316 8.5 2686 0.0 0.0018 <Sraiiyyi^

TCM AB 1— -------------------- Room- 417 . ----------------------- 16:00 21:05 305 8.5 2592 00 QSQJ_9..... ^Sensitivity

TIM A14 Room 414, ballway 16:00 21:07 3ff/ IQ 3070 12.63 0.0016

TEMA1.5 Room 430___ 16:03 21:14 311 2643 0.0 0.0018 <SeBgittYity

TEMA16 R(XitB425 16:05 21:0.5 300 9 2700 0.0 0.0018 cSeatilivity

TEM Al ? Outade fire escape 16:10 2);O7 297 .... 84 .. .25M___ 0.0 00019 cSeniJUvity

'P" Outdoors I o

s cn r- z S=AsbcU£>« ttructurmxc^cubic ceniinieters, mis=iiiiUuiieter Q Analyzed by; Date Analyzed: <= less djan, Flow Rate in liters per miuiite H Samples were Mialyzert using Fhtlips 4001 I riDMuittlop Electron Microscope. Asbestos identiticahon ij determined by the moipliology, visoal Selected Area Electron K I Dif&action (SAED), aod Eteroeotat Analysis using an Energy Dispersive X-ray Analyzer (EDAX). Conccotratiou on the filter is cakulated by taking the mmbei of asbcsioi structures and dlviiUog by the area analyzed. Air conccnlcation i.s catcuiued by mulbpiyiog S o the effective filter area (EFA) by the fiber eonceniratiun and dttn fflvtdiog by the volume of sir collected in cubic centitneters (cc). The data pertaining to these calculatiooa can be femod OB ibe Asbestos Count Sheet. o o The air filter cancentratioo relates only to air fiber content. When samples are sobraitted by an ouuicte agency for analysis. EnviroKtence. can only guarantee the 5! I o accuracy of the filter corseeatraUnn This report may not tie reproduced wiltwnl the express pennissioa of Enviroscience. This report can out be used to dim R o codorsemeDt of products by NVLAP or any agency of the U.S. GoveraraenL CO The samples odlected in the response acaon area deraatostrated a filter concenttatioa of aiibcetes less than scvcoiy structures pa square tniUunchx. This nsponsc (JI O aaiou is considered complcle accorrhog to ITA 40 CFR 763. CT) A result of zero structures per souarc millimeter is only applicable to the area analyzed. Test recoils only reflect cooditious at the titan samples ware Uken.

NYC-WTC_000210714